Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a classe de futebol da IHSAA em Culver?
 ###Tabelas: CREATE TABLE florida_counties_ranked_by_per_capita_income (florida_counties_ranked_by_per_capita_income_id AUTO_INCREMENT PRIMARY KEY, County VARCHAR, Per capita income VARCHAR, Median household income VARCHAR, Median family income VARCHAR, Population INT, Number of households INT) CREATE TABLE top_nfl_draft_selections (top_nfl_draft_selections_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Position VARCHAR, Overall Pick INT, Round VARCHAR, NFL Draft INT, Franchise VARCHAR) CREATE TABLE characteristics_of_telephone_cable_as_a_function_of_frequency (characteristics_of_telephone_cable_as_a_function_of_frequency_id AUTO_INCREMENT PRIMARY KEY, Frequency (Hz) VARCHAR, R (Ω/km) VARCHAR, L (mH/km) VARCHAR, G (μS/km) VARCHAR, C (nF/km) VARCHAR) CREATE TABLE  (_id AUTO_INCREMENT PRIMARY KEY, School VARCHAR, Location VARCHAR, Mascot VARCHAR, Enrollment INT, IHSAA Class VARCHAR, IHSAA Football Class VARCHAR, County VARCHAR) CREATE TABLE tertiary_institutions (tertiary_institutions_id AUTO_INCREMENT PRIMARY KEY, Institution VARCHAR, Location VARCHAR, Enrollment VARCHAR, Athletic nickname VARCHAR, School Colors VARCHAR, Founded INT)  
SELECT IHSAA Football Class FROM  WHERE Location = culver